Global Health Officials Scramble to Fight Zika Virus

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May 3, 2016

Published May 3, 2016 at 12:35 PM | Updated at 4:00 PM EDT on May 3, 2016

The Zika virus causes birth defects, including microcephaly and other brain issues, U.S. health officials confirmed for the first time in mid-April. "There is no longer any doubt that Zika causes microcephaly," said CDC director Dr. Tom Frieden. More than 4,000 cases of the virus have been recorded in Brazil as scientists continue to gather more information about the mosquito-borne disease, which has spread to dozens of countries in the Americas.